Originally Posted by thestu
Alright well I guess I'll just hit up a nice mountain bike
what sort of speeds can you maintain comfortably with a jack shaft kit?
"Maintaining" speed depends on whether you ride in a flat or hilly area. If you ride in a flat area, depending on the gear ratio of your rear hub, you can maintain an EASY 40mph. Good wind behind you 50mph is possible. Helmet and disc brakes recommended at those speeds... Just upgraded to disc brakes on mine. Took me 1/2 block to stop from full speed before I did.